Fetching all specific channel threads

[Meff1u]

I'm trying to fetch all possible threads from the channel (active and archived) and i can't find a way to do it.
Tried all of 3 methods (.fetch() / .fetchActive() / .fetchArchived()) and many different combinations with options argument.
The maximum I get is 25 threads, the before option doesn't work, or I'm using it wrong, because it keeps returning 25 of the same ones. I've been sitting on this for an hour and still can't get it to work, so maybe someone can help XD

[Meff1u]

I got it with offset option but... i did too many requests and i cant use discord XD